a) High Volume Horizontal Hydraulic Fracturing Operations

This Part applies to all horizontal wells in which any single stage of a stimulation treatment using more than 80,000 gallons, or in which the total amount of all stages of stimulation treatment using more than 300,000 gallons, in the pressurized application of hydraulic fracturing fluid to initiate or propagate fractures in a geologic formation to enhance extraction or production of oil or gas are planned, have occurred or are occurring in this State (Section 1-20 of the Act).

b) Medium Volume Horizontal Hydraulic Fracturing Operations

1. c) The provisions of this Part shall be in addition to the provisions of the Illinois Oil and Gas Act [225 ILCS 725] and the rules adopted under that Act (62 Ill. Adm. Code 240). However, if there is a conflict between the provisions of the Illinois Oil and Gas Act and the rules enacted pursuant thereto, the provisions of the Act and this Part shall prevail. (Section 1-20 of the Act)

Subpart L applies to all horizontal wells in which the total amount of all stages of stimulation treatment using more than 80,000 gallons but less than 300,001 gallons in the pressurized application of hydraulic fracturing fluid to initiate or propagate fractures in a geologic formation to enhance extraction or production of oil or gas are planned, have occurred or are occurring in this State (Section 1-98 of the Act).